*{
    margin: 0;
    padding: 0;
}
header{
    width: 100%;
    height: 50px;
    display: flex;
    background: #ccc;
    align-items: center
}
header input{
    width: 300px;
    height: 30px;
    border-radius: 20px;
    margin-left: 30px;
    
}